egotism vs solipsism

egotism

noun
  • Egoism (belief that behavior should be directed towards one's self-interest). 

  • A belief that one is superior to or more important than others. 

  • The result or product of being egoistic. 

  • A tendency to talk excessively about oneself. 

solipsism

noun
  • Self-absorption, an unawareness of the views or needs of others; self-centeredness; egoism. 

  • The idea that the self is all that exists or that can be proven to exist. 

How often have the words egotism and solipsism occurred in a corpus of books? (source: Google Ngram Viewer )